Suppose a simple random sample of size nequals64 is obtained from a population with mu equals 77 and sigma equals 16. (a) describe the sampling distribution of x overbar. (b) what is upper p (x overbar greater than 80.7 )? (c) what is upper p (x overbar less than or equals 72.6 )? (d) what is upper p (74 less than x overbar less than 82 )?

$32,660

step-by-step explanation:

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

lockers 1, 4, 9, 16, 25, 40, and 49 are open

i ran through it by the other answer is wrong